Skip to main content
SpringerPlus

Table 2 Results of solid humic acids analyses

From: The physico-chemical properties and biostimulative activities of humic substances regenerated from lignite

Sample

Yield

Elemental analysis

Thermogravimetry

FTIR Relative peak intensity ratios

C

H

N

O

H/C

N/C

O/C

Humidity

1st onset

Ash

Aliph./Arom.

Arom./O– groups

Arom./Amid.

  

[wt%]

[at%]

[at%]

[at%]

[at%]

[1]

[1]

[1]

[wt%]

[°C]

[wt%]

[1]

[1]

[1]

HA

10.7

43.5

37.0

0.9

18.6

0.85

0.02

0.43

5.8

202.8

0.9

1.24

0.93

1.08

RHA samples

10 N

11.0

40.0

45.8

0.6

13.6

1.15

0.02

0.34

5.4

226.6

0.5

1.23

0.99

1.08

20 N

28.4

38.2

42.7

2.1

16.9

1.12

0.06

0.44

5.8

134.8

0.3

1.20

0.96

0.98

30 N

24.6

37.9

42.0

2.4

17.7

1.11

0.06

0.47

5.8

162.4

0.4

1.24

0.96

0.95

40 N

18.8

38.3

40.9

2.9

17.8

1.07

0.08

0.46

4.3

153.1

0.4

1.13

0.97

0.94

50 N

34.7

38.4

41.1

2.7

17.8

1.07

0.07

0.46

4.9

152.6

0.5

1.20

0.97

0.93

65 N

35.5

36.7

43.5

2.9

17.0

1.19

0.08

0.46

5.2

169.7

0.5

1.18

0.98

0.90

5P

10.1

41.6

43.4

0.9

14.1

1.04

0.02

0.34

6.2

200.1

0.3

1.22

0.98

1.18

10P

9.1

40.2

44.5

0.8

14.5

1.11

0.02

0.36

6.2

192.2

0.3

1.25

0.98

1.12

20P

13.6

39.2

45.1

0.7

15.0

1.15

0.02

0.38

4.7

169.8

0.3

1.31

0.98

1.14

 

30P

7.0

38.9

46.6

0.4

14.1

1.20

0.01

0.36

3.7

204.0

0.3

1.24

0.99

1.07

Back to article page